The Denver Broncos are attempting to acquire former Indianapolis Colts quarterback Peyton Manning. According to sources, Manning is debating between the Broncos and the Tennessee Titans.

Manning worked out for the Broncos at Duke University on Friday. John Elway - executive VP of football operations, John Fox - Broncos' head coach, Brian Xanders - Broncos' general manager, Mike McCoy - Broncos' offensive coordinator, Adam Gase - Broncos' quarterbacks coach and the team doctors watched him workout.

Manning was seen leaving the Blue Devils' indoor practice facility wearing blue shorts, a gray T-shirt and no helmet heading to the outdoor practice field followed by Elway and Fox.

Manning came off the field about 2 p.m. MDT, and the Broncos contingent left about the same time.

After the workout, Elway tweeted: "We enjoyed visiting with Peyton today in N.C. He threw the ball great and looked very comfortable out there."

"Watching him throw today was the next step in this important process for our team and Peyton," Elway wrote. "It was a productive visit and went well."

NFL Network correspondent Albert Breer sent out a message on Twitter on Friday night about the impending decision: "Per league sources, Peyton Manning has informed clubs that he plans on making a final decision on his future on Monday or Tuesday," Breer wrote. "People involved aren't convinced he'll stick to that, partially because the process has been lengthy already. We'll see what happens."

The Broncos' jet returned to Colorado at 6:45 p.m.

The Denver Postreported the Broncos are prepared to offer Manning a 5-year, $90 million deal. It is unclear how much of that money would be guaranteed.

Friday morning, the flight departed just before 8:30 a.m. from Centennial Airport and arrived in Raleigh around 1:15 p.m. (EDT).

Manning is expected to workout for the Titans on Saturday morning.

The Arizona Cardinals are paying quarterback Kevin Kolb his $7 million roster bonus, effectively ending their pursuit of free agent Peyton Manning. Kolb was due the money if he remained on the roster past a 2 p.m. MDT Friday deadline. That time came and went with no change of Kolb's status with the team.

Manning came to Arizona and spent nearly 6 and a half hours at the team's facility on Sunday, but the team's chances faded as the week progressed.

Sources also told 9NEWS the workout in Raleigh took Manning's time past the Arizona deadline.

People familiar with the negotiations say the Miami Dolphins are out of the chase for Peyton Manning also. A person confirmed to The Associated Press that Manning phoned the Dolphins on Thursday and said he'll sign elsewhere.

A person familiar with the situation confirmed that Manning worked out for 49ers' coach Jim Harbaugh on Tuesday night at Duke. The person spoke with The Associated Press on condition of anonymity because no announcement has been made about the workout. ESPN first reported Manning worked out for San Francisco.

Manning's whirlwind free agency tour officially kicked off soon after he bid farewell to the Colts in an emotional press conference.

The Broncos had the first crack at wooing him, rolling out the red carpet for his visit. Team officials flew him in and he spent the spent the day chatting with Elway, the Hall of Fame QB turned team executive. Manning also was escorted around the team's building by Fox and general manager Brian Xanders as he listened to their sales pitch.

After that, Manning journeyed to nearby Castle Rock, Colo., and spent the evening with good friend Brandon Stokley, who played catch with Manning the next morning and spoke highly of his former teammate in an interview on a local radio show.

Manning's next stop was Arizona, where he met with the Cardinals for nearly 6½ hours. But the Cardinals also seemed to be out of the running on Friday, opting to pay quarterback Kevin Kolb a $7 million roster bonus he is due on Saturday.

Tennessee, however, remains in the picture. Manning has a big fan in 89-year-old Titans owner Bud Adams, and the former Tennessee Volunteer spent nearly eight hours this week with team executives on a plane and at the club's headquarters.

The NFL Network reported that Manning was expected to work out for the Titans, but there was no immediate confirmation from the team or word on when that would happen.